Now, lately the Social Liberals and the Social Democrats are nearly indistinguishable in policy though they remain distinguishable in which social network (or "base") they represent. En un viejo país ineficiente, algo así como España entre dos guerras civiles, poseer una casa y poca hacienda y memoria ninguna. -- Gil de Biedma
Labourers have become lower (middle) class, but the Labour party has already moved on to upper class...?
Note the parentheses. I wanted the focus on the lower class and with bits of lower middle class. I meant the same thing what you're writing.
When policies of Social Democrats shift closer to that of the Liberals, the Overton Window is at work. It only means Social Democrats represent their base in name only.
